Quote:
Originally Posted by intakexhaust
Harry-
Looks like you have an assembly line of IMS R&R's or 'Save the Boxster' campaign going on!
Cheers - Scott
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Sorry I got a little behind the eight ball, Thanks John for stepping in your experience with these is greater than mine. Scott yes they seem to be coming out of nowhere. Since this last one I did and with the results I found, two more people signed up for the change.
[QUOTE=derfo;6293491]
Quote:
Originally Posted by harryrcb
2002 BOXSTER with 56777 miles
There was no obvious noise, just a slight seep of oil. Let this be a heads up if you have engine oil seeping out, don't procrastinate. A new or even used engine is a lot more expensive than the LN bearing.
Hi Harry
Am I missing something here ? or are you saying that if there is a slight oil leak in that area it could be a sign that the IMS is going to fail. If that is what you mean how can an oil leak be a sign that IMS could fail, I dont see the connection. I could see that it would be a sign that the seal on the IMS is failing or that the RMS is failing, as I say am I missing something?
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As John said the bearing does not have to leak but if you have a leak you need to check it out. As it turned out on this one the bearing was binding when you try to rotate by hand. When you have tension on it form the cam chains and it is considerable tension under rpm you could get a wobble from the bearing that created the leak. Sometimes the bearing retainng bolts break sometimes they don't.
Quote:
Originally Posted by Spiderhole
Is it preventative to replace it on any higher mileage motor? Are the odd's in favor of destruction on all of them? How hard is it to get at it, and what is the procedure to replace?
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the only way to get at it is to pull the transmission and of course your clutch and flywheel and even then you may not be able to tell as in the one in this thread. you have to actually remove the bearing in order to tell if it is ok. by then you may as well just put in the LN bearing and be done with it. they not only have a different bearing but they beefed up the bolt that holds it and the cap the seals it.
what appears to be happening to these bearing in cars that are garage queens and or cars that are not driven as intended (quick) and the cars that don't get their oil changed between 3k and 5k are the ones that have the most probelms. with these cars just enought oil gets up in the shaft to wash the grease out of the "sealed" bearing but not enough to change it thouroghly. that's when you get the "smelly" oil that ron mention. those people who do DE's and autocrosses and drive daily spiritedly splash enough oil up the shaft to keep the bearing happy. This is only from my experience . I have drilled all my customers on their driving habits trying to establish some sort of pattern and this is what I came up with.